Finding the Fourth Proportional to 1,111.89, 1,533.39 and 758.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.89 : 1,533.39 = 758.34 : x
2. Step 2: Convert to fraction form
   1,111.89/1,533.39 = 758.34/x
3. Step 3: Cross multiply
   1,111.89x = 1,533.39 × 758.34
4. Step 4: Simplify right side
   1,111.89x = 1,162,830.97
5. Step 5: Solve for x
   x = 1,162,830.97/1,111.89
6. Step 6: Final answer
   x = 1,045.81